998
FOUS54 KMEG 150921
PFWMEG
FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE MEMPHIS TN
421 AM CDT MON AUG 15 2022
MSZ002-152200-
WINBORN NFDRS SITE-MARSHALL MS
34.69N 89.30W ELEV. 500 FT
421 AM CDT MON AUG 15 2022
DATE MON 08/15/22 TUE 08/16/22 WED 08/17/22
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
MAX/MIN TEMP 93 69 91 69 82
TEMP 74 86 92 93 87 77 74 70 70 80 87 90 85 76 73 70 69 75 80 81 77
DEWPT 69 73 70 69 68 69 68 67 68 69 67 67 68 68 68 67 68 70 71 70 70
MAX/MIN RH 46 97 47 97 69
RH 84 65 49 46 53 76 82 90 93 69 52 47 57 76 84 90 97 84 74 69 79
WIND DIR W W NW NW N N NE NE NE E N NE NE NE NE E E E N N N
WIND SPD 2 5 10 12 6 3 2 2 2 3 5 6 5 2 2 2 2 4 4 5 5
CLOUDS SC SC SC SC FW FW SC FW FW FW SC SC SC SC SC B1 B2 B2 B2 B1 B1
CLOUDS(%) 39 33 32 31 23 20 32 20 17 25 38 28 31 31 45 59 78 77 72 58 63
POP 12HR 10 5 20 40 70
QPF 12HR 0 0 0 0.31 0.58
RAIN SHWRS IS IS IS IS IS IS SC SC NM NM NM NM SC
TSTMS IS IS IS IS IS SC SC SC SC SC SC SC
T WIND DIR SW W W NW N N NE NE NE W N NE NE NE NE NE E NE N N N
T WIND SPD 3 17 17 16 12 12 13 4 3 2 5 4 11 6 11 8 8 9 9 9 10
MIXHGT M AGL 1433 1513 249 24 1242 1414 273 120 527 518
MIXHGT FT AGL 4700 4964 818 79 4074 4638 896 395 1729 1701
MIXHGT M MSL 1554 1635 371 146 1364 1536 395 242 649 640
MIXHGT FT MSL 5100 5364 1218 479 4474 5038 1296 795 2129 2101
TRANSWIND DIR W NW NE NE W NE NE NE NE N
TWIND SPD M/S 6 6 5 3 1 3 4 4 4 4
TWIND SPD MPH 14 14 11 6 3 6 9 9 9 9
VENT INDEX 11445 2480 3072 1936 2596
CATEGORY DAY 4 2 2 1 2
500M MIXHGT T 87 89 83 78 80 86 85 81 73 73
500M TWND DIR W NW NE NE NE E E SE E NE
500M TWND M/S 6 5 8 7 1 2 5 7 5 6
500M TWND MPH 14 12 18 17 3 5 12 17 12 13
DISPERSION 49 22 12 10 15 5 10 11 19 7
LAL 1 1 1 1 2 2 3 3 3 3
LASI 4 4 4 4 4 4 3 3 3 3
STABILITY B C F E A C F E B B
STAG INDEX 3 3 3 3 1
DATE THU 08/18/22FRI 08/19/22SAT 08/20/22SUN 08/21/22
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MIN/MAX TEMP 66 82 67 85 67 88 69 86
TEMP 69 66 79 80 69 67 83 81 69 69 86 83 71 69 85 79
DEWPT 69 66 68 67 67 67 67 67 69 68 68 68 69 68 70 70
RH 100100 69 65 93100 59 63100 97 55 61 93 97 61 74
WIND DIR NE NE NE NE SE SW S SW
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 SC SC SC SC SC SC SC FW SC SC SC SC B1 SC
POP 12HR 40 20 10 20 10 20 20 30
RAIN SHWRS SC SC IS IS IS IS IS IS IS SC
TSTMS SC IS IS IS IS IS SC
BELOW IS A WEATHER ELEMENT KEY FOR THIS PRODUCT
DAY 1 THROUGH 3...
MAX/MIN TEMP OR MIN/MAX TEMP (F)....MAXIMUM/MINIMUM AIR TEMPERATURE
TEMP (F)............................AIR TEMPERATURE
DEWPT (F)...........................DEW POINT TEMPERATURE
MIN/MAX RH OR MAX/MIN RH (%)........MAXIMUM/MINIMUM HUMIDITY
RH (%)..............................RELATIVE HUMIDITY
WIND DIR (8 POINT COMPASS)..........20 FT. WIND DIRECTION
WIND SPD (MPH)......................20 FT. WIND SPEED
WIND CHILL (F)......................WIND CHILL
HEAT INDEX (F)......................HEAT INDEX
CLOUDS (CAT)........................CLOUD COVER CATEGORY
EXAMPLE: CL = CLEAR; FW = FEW; SC = SCATTERED;
B1 = MOSTLY CLOUDY; B2 = CONSIDERABLE CLOUDS; OV = OVERCAST
CLOUDS (%)..........................CLOUD COVER AS A PERCENTAGE
POP 12HR (%)........................PROBABILITY FOR ACCUMULATING PRECIPITATION
QPF 12HR (IN).......................LIQUID EQUIVALENT PRECIPITATON AMOUNT
WEATHER...
TYPE...
RAIN...........RAIN
RAIN SHWRS.....RAIN SHOWERS
TSTMS..........THUNDERSTORMS
DRIZZLE........DRIZZLE
SNOW...........SNOW
SNOWSHWRS......SNOW SHOWERS
SLEET..........SLEET
FLURRIES.......FLURRIES
FRZG RAIN......FREEZING RAIN
FRZG DRZL......FREEZING DRIZZLE
COVERAGE...
IS.............ISOLATED
SC.............SCATTERED
NM.............NUMEROUS
O..............OCCASIONAL
S..............SLIGHT CHANCE
C..............CHANCE
L..............LIKELY
WD.............WIDESPREAD
D..............DEFINITE
AR.............AREAS
PA.............PATCHY
OBVIS...............................OBSTRUCTION TO VISIBILITY
TYPE...
F..............FOG
PF.............PATCHY FOG
+PF............PATCHY DENSE FOG
F+.............DENSE FOG
H..............HAZE
BS.............BLOWING SNOW
K..............SMOKE
BD.............BLOWING DUST
MIXHGT M AGL........................MIXING HEIGHT IN METERS ABOVE GROUND LEVEL
MIXHGT FT AGL.......................MIXING HEIGHT IN FEET ABOVE GROUND LEVEL
MIXHGT M MSL........................MIXING HEIGHT IN METERS MEAN SEA LEVEL
MIXHGT FT MSL.......................MIXING HEIGHT IN FEET MEAN SEA LEVEL
TRANSWIND DIR (8 POINT COMPASS).....TRANSPORT WIND DIRECTION
TWIND SPD MS (M/S)..................TRANSPORT WIND SPEED IN METERS PER SECOND
TWIND SPD MPH (MPH).................TRANSPORT WIND SPEED IN MILES PER HOUR
VENT INDEX (M2/S)...................VENT INDEX IN METERS SQUARED PER SECOND
CATEGORY DAY........................CATEGORY DAY BASED ON VENT INDEX
EXAMPLE: 1 = <2000; 2 = >=2000 AND <4000; 3 = >=4000 AND <8000;
4 = >=8000 AND <16000; 5 = >=16000
500M MIXHGT T (F)...................SURFACE TEMPERATURE NEEDED TO CREATE MIXING
UP TO 500 METERS ABOVE THE GROUND
500M TWND DIR (8 POINT COMPASS).....TRANSPORT WIND DIRECTION AT 500 METERS AGL
500M TWND M/S.......................TRANSPORT WIND AT 500 METERS AGL IN M/S
500M TWND MPH.......................TRANSPORT WIND AT 500 METERS AGL IN MPH
DISPERSION..........................DISPERSION INDEX FOR SMOKE DISPERSION
EXAMPLE: 1-6 = VERY POOR; 7-12 = POOR; 13-20 = GENERALLY POOR
21-40 = FAIR; 41-60 = GENERALLY GOOD; 61-100 = GOOD
101+ = EXCELLENT
LAL.................................LIGHTNING ACTIVITY LEVEL
EXAMPLE: 1 = NO THUNDERSTORMS; 2 = ISOLATED THUNDERSTORMS
3 = WIDELY SCATTERED THUNDERSTORMS; 4 = SCATTERED THUNDERSTORMS
5 = NUMEROUS THUNDERSTORMS; 6 = DRY LIGHTNING WITH NO RAIN
LASI (SAME AS HAINES INDEX).........LOWER ATMOSPHERIC SEVERITY INDEX
MEASURES FIRE GROWTH POTENTIAL
EXAMPLE: 1-3 = VERY LOW; 4 = LOW; 5 = MODERATE; 6 = HIGH
STABILITY...........................STABILITY CLASS
EXAMPLE: A = VERY UNSTABLE; B = MODERATELY UNSTABLE; C = SLIGHTLY UNSTABLE
D = NEUTRAL; E = SLIGHTLY STABLE; F = MODERATELY STABLE
G = VERY STABLE
STAG INDEX..........................STAGNATION INDEX
EXAMPLE: 0 = WINDS >= 10 MPH; 1 = WINDS <= 10 MPH WITH RAIN
2 = DRY WITH DECENT WINDS
3 = DRY WITH LIGHT WINDS AND STAGNATE CONDITIONS
WATCH/WARNING/ADVISORY...
EXAMPLE: W = WARNING; Y = ADVISORY; A = WATCH
IN EFFECT FOR THE INDICATED HOUR
DAY 4 THROUGH 7...
MAX/MIN TEMP OR MIN/MAX TEMP (F)....MAXIMUM/MINIMUM AIR TEMPERATURE
TEMP (F)............................AIR TEMPERATURE
DEWPT (F)...........................DEW POINT TEMPERATURE
RH (%)..............................RELATIVE HUMIDITY
WIND DIR (8 POINT COMPASS)..........20 FT. WIND DIRECTION
WIND SPD (MPH)......................20 FT. WIND SPEED
AVG CLOUDS (CAT)....................AVERAGE CLOUD COVER CATEGORY
POP 12HR (%)........................PROBABILITY FOR ACCUMULATING PRECIPITATION
WEATHER...
SEE DAY 1 THROUGH 3 WEATHER DESCRIPTIONS
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